LPC1769 CAN1 peripheral resets itself after message send

lpcware — Wed, 15 Jun 2016 17:21:03 GMT

Content originally posted in LPCWare by erbal_gfx on Thu Jul 30 03:54:59 MST 2015
Hello Guys!

I have a custom board with an LPC1769 uC on it. I want to use CAN1, and send a message first of all to check it.

After CAN initialization function I want to send a test message, but it don't happen and my peripheral sets itself to reset. Before send the register values looks fine, I've checked it. I also tested it in self test mode, in that case the TX interrupt is called, everything looks fine. My controller works on 112Mhz.

My CAN init function is the following:
(Somehow the forum doesn't show a big part of my code)
<code>

static void CAN1init(void)
{
PINSEL_CFG_Type PinCfg ={
.Portnum = PINSEL_PORT_0,
.Pinnum = PINSEL_PIN_0,
.Funcnum = PINSEL_FUNC_1,
.OpenDrain = 0,
.Pinmode = PINSEL_PINMODE_NORMAL,
};
//CAN_RX
PINSEL_ConfigPin(&PinCfg);

//CAN TX
PinCfg.Pinnum = PINSEL_PIN_1;
PINSEL_ConfigPin(&PinCfg);

//CAN STB
PinCfg.Funcnum = PINSEL_FUNC_0;
PinCfg.Pinnum = PINSEL_PIN_3;
PinCfg.Portnum = PINSEL_PORT_2;
PinCfg.Pinmode = PINSEL_PINMODE_NORMAL;
PINSEL_ConfigPin(&PinCfg);
GPIO_SetDir(PINSEL_PORT_2, (1<<PINSEL_PIN_3), Output);
GPIO_ClearValue(PINSEL_PORT_2, (1<<PINSEL_PIN_3));

CAN_Init(LPC_CAN1, 500000);

CAN_ModeConfig(LPC_CAN1, CAN_TXPRIORITY_MODE, ENABLE);

CAN_IRQCmd(LPC_CAN1, CANINT_RIE, ENABLE);
CAN_IRQCmd(LPC_CAN1, CANINT_TIE1, ENABLE);

CAN_SetAFMode(LPC_CANAF,CAN_AccBP);

NVIC_EnableIRQ(CAN_IRQn);
}

</code>

Re: LPC1769 CAN1 peripheral resets itself after message send

lpcware — Wed, 15 Jun 2016 17:21:04 GMT

Content originally posted in LPCWare by R2D2 on Thu Jul 30 04:29:36 MST 2015

Quote: erbal_gfx
...(Somehow the forum doesn't show a big part of my code)

Could be useful to post your complete project...

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LPC1769 CAN1 peripheral resets itself after message send

Re: LPC1769 CAN1 peripheral resets itself after message send